Pokemon Go Gen 2: Highest CP and Strongest Pokemon

The list gives you choices to find the best Pokemons, well most of them are not spawned yet. There are more than 100 new pokemons with different strength and size. If you go for all of them, it would be a daunting task to keep them in the inventory. If you know which are the best then you can avoid wasting time on the weaker one.
In the list below we have mentioned the best 10 pokemons of different categories, like power, stamina, etc. We had used various sources to find the top ones here, sources links are available at the end of this article for reference. You can visit them for more details about the pokemons. Thanks to Rankedboost from comprehensive information on the list of pokemons below.
Top Pokemons to catch in Pokemon Go Gen2 with Max Potential CP:
Porygon2
- MAX CP: 2546
- ATTACK: 198
- DEFENSE: 183
- STAMINA: 170
Ampharos
- MAX CP: 2695
- ATTACK: 211
- DEFENSE: 172
- STAMINA: 180
Typhlosion
- MAX CP: 2686
- ATTACK: 223
- DEFENSE: 176
- STAMINA: 156
Feraligatr
- MAX CP: 2721
- ATTACK: 205
- DEFENSE: 197
- STAMINA: 170
Ursaring
- MAX CP: 2760
- ATTACK: 236
- DEFENSE: 144
- STAMINA: 180
Espeon
- MAX CP: 3000
- ATTACK: 261
- DEFENSE: 194
- STAMINA: 130
Scizor
- MAX CP: 2801
- ATTACK: 236
- DEFENSE: 191
- STAMINA: 140
Heracross
- MAX CP: 2938
- ATTACK: 234
- DEFENSE: 189
- STAMINA: 160
Blissey
- MAX CP: 3219
- ATTACK: 129
- DEFENSE: 229
- STAMINA: 510
Tyranitar
- MAX CP: 3670
- ATTACK: 251
- DEFENSE: 212
- STAMINA: 200
Top Pokemons who could be idle defenders in Gym:
- Blissy
- Snorlax
- Trynitar
- Dragonite
- Vaporeon
Top Pokemons who could be idle attackers in Gym:
- Trynitar
- Dragonite
- Alakazam
- Rhydon
- Espeon
List of Best Gen2 Pokemons you must catch, if found:
- Ho-Oh
- Tyranitar
- Lugia
- Entei
- Raikou
- Blissey
- Celebi
- Donphan
- Espeon
- Heracross
- Suicune
- Scizor
- Ursaring
- Feraligatr
- Ampharos
- Typhlosion
- Porygon2
- Houndoom
So these are the names you can remember, in case if you are having any one of them, it is worth to spend some candies on them.
On reddit user gen2guessing has shared pictures that will help you with pokemon Sightings and Rarity Chart.